SQL vazifa to'plami 6.7 Darajasi
Quyidagi jadvallar berilgan:
| id | name | price | employee_id |
|---|---|---|---|
| 1 | product-1 | 3200 | 2 |
| 2 | product-2 | 1500 | 1 |
| 3 | product-2 | 2000 | 1 |
| 4 | product-1 | 4000 | 2 |
| 5 | product-2 | 3200 | 3 |
| 1 | product-3 | 5000 | 3 |
| 1 | product-3 | 1000 | 1 |
| 1 | product-2 | 2500 | 3 |
| 1 | product-1 | 1600 | 2 |
| 1 | product-4 | 5500 | 1 |
| id | name | hire_date |
|---|---|---|
| 1 | Evans | 2023-01-01 |
| 2 | Max | 2020-10-30 |
| 3 | Jim | 2022-12-01 |
Ularni quyidagi vazifalarni yeching:
Задание 1
Eng past savdo summasi bo‘yicha mahsulotni aniqlang.
Задание 2
Har bir xodim tomonidan qayta ishlangan mahsulotlar sonini hisoblang.
Задание 3
Eng katta summada tovarlar sotgan xodimni tanlang.
Задание 4
Yil xodimini tanlang. Yil xodimi - bu eng katta summada va eng ko'p mahsulot sotgan xodim.